Governor for fluid-pumps.



A. J. MOTTLAU.

GOVERNOR FOR FLUID PUMPS.

APPLICATION FILED JUNE 23. ms.

2 SHEETSSHEET I.

111 03? Zau.

Patented Jan. 22, 1918.

A. J. MOTTLAU.

GOVERNOR FOR FLUID PUMPS.

APPLICATION ElLED JUNE 23.1916.

Patented Jan. 22, 1918.

2 SHEETS-SHEET 2.

INVENTOI? fiuguszf JMoiilau.

1/ .A TTOR/VEY.

UNTTED %TA 1F% rarnnr caries.

AUGUST J. MOT'ILAU, OF PHILADELPHIA, PENNSYLVANIA. ASSIGNOR, BY DIREC'I AND MESNE ASSIGNMENTS, T0. G. E. M. ENGINEERING COMPANY, OF PHILADELPHIA,

PENNSYLVANIA, A CORPORATICN OF DE AWARE.

GOVERNOR FOB FLUID-PUMPS.

Patented Jan. 22, 1918.

Application filed June 23, 1916. Serial No. 105,337.

To all whom it may concern:

Be it known that I, AUGUsT J. MorrLaU, a subject of the King of Denmark, residing in Philadelphia, Pennsylvania, U. S. A., have. invented certain new and useful Improvements in Governors for Fluid-Pumps,

"of which, the following is a specification.

My present invention relates to an improvement in fluid brakes for spring motors and other like sources of non-uniform power translation. One of the main features of my improvement is that it permits the use ofa source of limited power, such as a clock spring, the slow and non uniform expenditure of energy of such spring being controlled and made uniform for a predetermined period of time, or for a given number of revolutions per minute. This feature of control of 'owerpermits the use of power sources of like limited duration and non-uniformity, such, for instance, as weights, which makes it useful for small precision instruments of scientific nature, and it may also be used as a governor control for phonograph motors.

In the accompanying drawings, Figure 1 is a sectional view of my device taken on the line 22, Fig. 2.

Fig. 2 is a rear elevation of my device.

Fig. 3 is a sectional view taken on the line 44, Fig. 4., showing a modification of my device.

Fig. 1 is a side elevation taken on line 3-3, Fig. 3, looking in the direction-of the arrows, and

Fig. 5 is an enlarged view of the ratchet mechanism.

My apparatus comprises a base generally denoted by 1, having arranged thereon a housing generally denoted by 2, the said housing in the present instance being pref-' which, in turn, meshes with the gear 9 in such a manner that when the shaft 5 is rotated to wind the spring 3, the gear 9 is caused to be rotated through its connection with the pinion 8. The said gear 9 is fixedly mounted upon a rotatable needle valve stem 10, one end of which stem is threaded as at 11, which thread fits into a threaded bore 12 in such a manner that when the gear 9 is rotated'the said needle valve 10 is caused to advance toward the right or left, according to the direction of rotation of said gear 9.

The needle valve end of the stem'10 is slotted as'at 13, the said slot running from nothing at the rear end of the stem to within say one-half of the area at the gear end of the stem, so that when the said needle valve is in certain predetermined positions in the cylindrical bore in which it rotates and oscillates, each position of said stem cuts off more or less of the area of the said bore in which it rotates, according to its longitudinal position.

Located in alinement with the shaft 5 in the adjacent housin is another shaft 14L which terminates at the point 7, and located at this terminal point is a ratchet gear 15 which is operated upon by a ratchet 18 carried upon an arm 19 affixed to the end of the shaft 5 adjacent to said pinion 8, as shown in Fig. 5, so that when the crank 6 is operated to coil the spring, said ratchet release mechanism permits the shaft 5 to be rotated without rotating shaft 141, but when the spring 3 commences to uncoil, the ratchet 18 engages the ratchet wheel 15 and causes the pump gear 4 to rotate.

The pump gear 4 used in this apparatus is entirely similar to that shown in the modification, Fig. 4, a brief description of which figure will now be given in order that the pump mechanism of Fig. 1 will be understood. The same numerals for like parts are used in both forms. The pump gear 4 is keyed or otherwise mounted, on the shaft 14, and is in mesh with an internal gear 20,

closelyfits the outer faces of the teethofj the gears 20 and 4, so that when the bers 22 and 23 are filled with a fluid, such as oil, or the like, and when the gear ft is rotated in any direction, say for instance clockwise, the oil, in chamber 23 carried around through the tooth. spaces 2% of both gears to the chamber where it istheu deliveredto a duct 27, the said duct being controlled by the adjustable needle valve 26; From: thence the ;flui'd flows by the needle valve into the duct and then back into the chamber 22.

in the form already described shown in Fig. 1, however, the action is slightly different althoughthe pump gearing is exactly as described for Fig. 4. By referring to Fig 2, it .will be noted that there is arranged a pair of ducts 2S and which tap the chambers 22 and 28 as'described forFig. 4:, so that when the gears at and QOarei-Qtated the fluid follows substantially the same course through the ducts as. the direction of rotation of the gears, with the exception that the upper ends of sa d ducts connect with the upper throttle chamber 30 m wh ch there is located the rotating and recipro'ating throttle needle valve 10.

In the last noted construction, when the shaft 5 is'rotated to wind the'coil spring up, the gearl does not move owing to the action of the ratchet escapement 15, as previously described. After the'coil spring 3'is wound up the gears 'l and 20 are driven byreason l of the action'of the ratchet es'capement 18 and 15-, and the fluid is caused to circulate through the said ducts and by the valve 10, and is permitted to escape in controlled volu'me from one gear chamber into the other.

the said circulation being entirely controlled by said needle valve 10. It is obvious that when the coil spring is first released to exert its-power upon the gears iand 20, it exerts thereon its maximum power and that this power exertion (liII)ll1lSl1S indirect ratio as the spring uncoils until finally it reaches its maximum ofexpansion and its minimum of power and stops.- Owing to the action of the-throttle valve 10 in the duct 28'29, the

expansion-of the spring, and its consequent power delivery is retarded in such a manner that the spring isprevented'from running down too rapidly and the revolutions thereof are controlled to a predetermined degree either by manual manipulation of the valve 10, as shown in the modificationin Figs. 3 and i, or is automatically regulated in direct proportion tothe untensioning of the spring as shownin the preferred form in Figs. l

' and 2; r

7 The means for controlling, within a reasonable limit, the rotations per-minute of the shaft 14 which may be attachedio any desired driven mechanism, comprises the pinion 8, thegear 9, and the threaded needle valve 10, which means consequently automat cally' controls the circulation of the i such circulation in direct proportion to the energy stored up in the spring at anygiven period of unwinding of said spring. 1Obviously, when the shaft 5 is wound in order to wind the spring, the needle valve 10 is caused to move longitudinally by reason of the action of the thread 11 upon its one end. Thus, at any expansion or contraction of the spring 3 the slotted needle-valve will. be moved to and fro, thereby choking down or throttling the entrance 31 which is at the outlet side ofsaid pump, and as this constriction occurs atv this point the fluid in the pump portion will retard or accel crate the rotation of the gears't and 20 in exact accordance with the, velocityof the said fluid at the choke point 31. l

" n themodification shown in FigsJB and ahlike parts have like numbers throughout,

theentire construction being similar-tocjthat described in Figs'l and 2, with-"the exception that there'is no automatic compensatin'g needle valve which operates in direct ratiofas described for Fig.1, in order'to permitfa certain proportional flow of the fluid through the pump and thereby actas a proportional retarding dash pot for said spring.

set by hand, so that a certain portion oi"; the

rotation of the-spring motor may be so controlled or retarded as to very nearly pro The means provided have. already been ClQSCl'lbQCl,COITlPl'lSUlg af 1n'an-' ually controllableneedle valve 26 which 18" duce the required number of turns per chamber on one side of the eccentricallv mounted 'gearpinion, and at the other end with a like space on the other side thereof;

an adjustable valve forthrottling the passage from one side chamber to the-other; v

and a motor for rotating the shaft carrying";

the gear-pinion.

2. In a device of the class described, the combination with a cylindrical pump-casing carrying revolubly mounted thereinan'internal spur-gear wheel; of a motor. driven shaft eccentrically passing through the'casing above the center thereof; a gear-pinion meshing with the internal spur-gear wheel secured to the shaft located within the easing; a fluid-passage cornectingatone end with a side-space or chamber on one side of the eccentrically mounted gear-pinion, and

at the other end with a like space on the other side thereof; an adjustable valve for throttling the passage from one side-chamber to the other; and a motor for rotating the shaft carrying the gear-pinion.

3. In a device of the class described, the combination with a cylindrical pump-casing carrying revolubly mounted therein, an internal spur-gear wheel; of a motor driven shaft eccentrically passing through the casing; a gear-pinion meshing with an internal spur-gear wheel secured to the shaft located within the casing; a fluid-passage connecting at one end with a side-space or chamber on one side of the eccentrically mounted gear-pinion, and at the other end with a like space on the other side thereof; an adjustable valve for throttling the passage from one side-chamber to the other; means for automatically adjusting the valve; and a motor for rotating the shaft carrying the gear-pinion.

4. In a device of the class described, the ombination with a cylindrical pump-casing carrying revolubly mounted therein an internal spur-gear wheel; of a motor driven shaft eccentrically passing through the casing above the center thereof; a gear-pinion meshing with the internal spur-gear wheel secured to the shaft located within the casing; a fluid-passage connecting at one end with a side-space or chamber on one side of the eccentrically mounted gear-pinion, and at the other end with a like space on the other side thereof; an adjustable valve forthrottling the passage from one sidechamber to the other; means for automatically adjusting the valve; and a motor for rotating the shaft carrying the gear-pinion.

In a device of the class described, the combination with a cylindrical pump-easing; of an annular internal spur-gear wheel revolubly mounted therein; a motor driven shaft eccentrically passing through the casing; a gear-pinion meshing with the internal spur-gear wheel secured to the shaft located within the casing; a fluid-passage connecting at one end with a side-space or chamber on one side of the eccentrically mounted gear-pinion, and at the other end with a like space on the other side thereof; an adjustable valve for throttling the passage from one side-chamber to the other; a crescent-shaped filler member secured in the casing between the main meshii'ig'peripheral portion of the gear-pinion and the internal annular gear-wheel; and a motor for rotating the shaft carrying the gear-pinion.

6. In a device of the class described, the combination with a cylindrical pumpcasing; of an annular internal spur-gear wheel revolubly mounted therein; a motor driven shaft eccentrically passing through the casing above the center thereof; a gearpinion meshing with the internal spurgear wheel secured to the shaft located within the casing; a fluid-passage connecting at one end with a side-space or chamber on one side of the eccentrically mounted gear-pinion, and at the other end with a like space on the other side thereof; an adjustable valve for throttling the passage from one side-cham her to the other; a crescent-shaped filler member secured, in the casing between the main meshing peripheral portion of the gear-pinion and the internal annular gearwheel; and a motor for rotating the shaft carrying the gear-pinion.

7. In a device of the class described, the combination with a cylindrical pumpcasing; of an annular internal spur-gear wheel revolubly mounted therein; a motor driven shaft eccentrically passing through the casing above the center thereof; a gearpinion meshing with the internal spur-gear wheel secured to the shaft located within the casing; a fluid-passage connecting at one end with a side-space or chamber on one side of the eccentrically mounted gearpinion, and at the other end with a like space on the other side thereof; a rotating regulating valve for throttling the fluid-passage; a motor for rotating the motor shaft; and mechanism connecting the motor with the throttling valve in such manner that when the same is rotated in one direction, it will throttle such fluid-passage and when in the other, will unthrottle the same.

8. In a device of the class described, the combination with a cylindrical pump-casing; of an annular internal spur-gear wheel revolubly mounted therein; a motor driven shaft eccentrically passing through the casing above the center thereof; a gear-pinion meshing with the internal spur-gear wheel secured to the shaft located within the casing; a fluid-passage connecting at one end with a side-space or chamber on one side of the eccentrically mounted gearpinion, and at the other end with a like space on the other side thereof; a spring motor rotating the motor shaft; a rotating regulating valve throttling the fluid-passage; and mechanism connecting such valve with the motor, in such manner that when such motor spring is being wound up, the valve will be thrown toward the closed and throttling position, and toward the open position when unwinding.

9. In a device of the class described, the combination with a cylindrical pump-casing; of an annular internal spur-gear Wheel revolubly mounted therein; a motor driven shaft eccentrically passing through the casing; a gear-pinion meshing with the in ternal spur-gear wheel secured to the shaft and located within the casing; a fluid-passage connecting at one end with a side-space or chamber on one side of the eeeentrically mounted upon a shaft for rotating the shaft and the gear-pinion; means for winding up the motor spring; and a ratchet and pawl mechanism for preventing retroaction of the springconneeting the two shafts.

AUGUST J. MOTTLAU. Vitnesses GUSTAV DnEWs, H. D. PENNEY.

Copies of this patent may-be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. O. 

